Headgear assembly for breathing interface

ABSTRACT

An interface and headgear assembly includes a headgear assembly. The headgear assembly has a first strap configured to connect to the interface. A crown strap can be adjusted along a length of the first strap. In some configurations, the crown strap has a first portion and a second portion that are adjustably connected. The crown strap can be removably connected to the first strap using bridge regions of the first portion and the second portion.

INCORPORATION BY REFERENCE TO ANY PRIORITY APPLICATIONS

Any and all applications for which a foreign or domestic priority claimis identified in the Application Data Sheet as filed with the presentapplication are hereby incorporated by reference under 37 CFR 1.57.

BACKGROUND OF THE INVENTION

1. Field

The present disclosure generally relates to headgear for respiratorydevices, such as breathing masks. More particularly, the presentdisclosure relates to such headgear in which a strap extendscircumferentially around a head.

2. Description of the Related Art

Headgear is used to secure an interface or breathing mask to the face ofthe user. The headgear can have any number of configurations. Ingeneral, the headgear is used to apply a force vector to the interfacethat opposes the forces generated by the interface while supplyingbreathing gases to the user. Not all users, however, have the sameexperience with any single form of headgear and, from time to time, anyindividual user may wish to change the user experience with the headgearbeing used by the user.

SUMMARY

Thus, it is an object of the disclosure to provide patients with aheadgear assembly that might be easier to use or that is easilyreconfigurable, or at least provide the public with a useful choice.

In some configurations, an interface and headgear assembly include aninterface comprising a frame and a seal supported by the frame. Aheadgear assembly is removably connected to the interface. The headgearincludes a first strap configured to connect at a first end to theinterface and at a second end to the interface. A crown strap isconnected to the first strap. The crown strap comprises a first bridgeregion and a second bridge region. The first bridge region defines afirst passage that receives the first strap and the second bridge regiondefines a second passage that receives the first strap. Each of thefirst bridge region and the second bridge region is adjustable inposition relative to the first strap.

In some configurations, each of the first bridge region and the secondbridge region comprises multiple supporting components configured tosecure the first bridge region and the second bridge region,respectively, to the first strap.

In some configurations, the supporting components comprise a first loopand a second loop configured to receive the strap of the interface andheadgear assembly.

In some configurations, each of the first and second loops is aninterrupted loop.

In some configurations, each of the first and second loops comprises anupper portion and a lower portion defining a slot therebetween.

In some configurations, a width of a passageway defined by each of thefirst and second loops is smaller at the upper portion than at a lowerportion.

In some configurations, the assembly further comprises at least onemedial member positioned between the first loop and the second loop andextending vertically upward from a lower lip of the first bridge region.

In some configurations, the at least one medial member supports thefirst strap at a relatively higher position than a position of the firststrap at the first and second loops.

In some configurations, the at least one medial member comprises a lowermedial member and an upper medial member and the first strap can beengaged with either of the lower or upper medial members to adjust aneffective length of the first strap.

In some configurations, the crown strap comprises a first strap regionand a second strap region, the first strap region and the second strapregion being removably coupled together.

In some configurations, the first strap region and the second strapregion are coupled by an adjustment mechanism.

In some configurations, the adjustment mechanism comprises a pluralityof apertures and one or more posts that are selectively engageable withthe plurality of apertures.

In some configurations, the adjustment mechanism comprises two or moreslots and a plurality of ridges that are selectively engageable with theone or more slots.

In some configurations, the adjustment mechanism comprises one or moreslots and one or more wedges or flaps that are selectively engageablewith the one or more slots.

In some configurations, the first strap is constructed from astretchable material.

In some configurations, the first strap is a tubular-knitted elasticstrap.

In some configurations, the crown strap is constructed from asubstantially non-stretchable material.

In some configurations, at least a strap region of the crown strap isconstructed from a flexible material.

In some configurations, the material of the strap region has sufficientrigidity such that it is capable of substantially maintaining its shape.

In some configurations, the assembly comprises a sleeve on the firststrap.

In some configurations, a surface of the sleeve that contacts a user inuse comprises grip-enhancing features.

In some configurations, a removable crown strap assembly is removablyconnected to the first strap.

In some configurations, the removable crown strap assembly comprises afirst portion and a second portion.

In some configurations, the first portion and the second portion can beconnected with an adjustment mechanism.

In some configurations, the first portion comprises a first strap regionand a first bridge region and the second portion comprises a secondstrap region and a second bridge region.

In some configurations, the first bridge region defines a first passagethat removably receives the first strap and the second bridge regiondefines a second passage that removably receives the first strap.

In some configurations, an interface and headgear assembly can beprovided. The interface can comprise a frame and a seal supported by theframe. A headgear assembly can be removably connected to the interface.The headgear can comprise a first strap configured to connect at a firstend to the interface and at a second end to the interface. A removablecrown strap assembly can be removably connected to the first strap. Theremovable crown strap assembly comprises a first portion and a secondportion. The first portion and the second portion can be connected withan adjustment mechanism. The first portion comprises a first strapregion and a first bridge region and the second portion comprises asecond strap region and a second bridge region. The first bridge regiondefines a first passage that removably receives the first strap and thesecond bridge region defines a second passage that removably receivesthe first strap.

In some configurations, a removable crown strap assembly can beconfigured for use with an interface and headgear assembly. Theremovable crown strap assembly comprises a first bridge region and asecond bridge region configured to receive a strap of the interface andheadgear assembly.

In some such configurations, the first bridge region comprises multiplesupporting components configured to secure the first bridge region tothe strap of the interface and headgear assembly. In some suchconfigurations, the supporting components comprise a first interruptedloop and a second interrupted loop configured to receive the strap ofthe interface and headgear assembly. In some such configurations, amedial member is positioned between the first interrupted loop and thesecond interrupted loop and extends vertically upward from a lower lipof the first bridge region. In some such configurations, the removablecrown strap assembly comprises a first strap region and a second strapregion with the first strap region and the second strap region beingremovably coupled together. In some such configurations, the first strapregion and the second strap region are coupled by an adjustmentmechanism.

BRIEF DESCRIPTION OF THE DRAWINGS

These and other features, aspects and advantages of the presentdisclosure will now be described with reference to the drawings ofpreferred embodiments, which embodiments are intended to illustrate andnot to limit the disclosure, and in which figures:

FIG. 1 is a partially exploded view of an interface and headgearassembly that is arranged and configured in accordance with certainfeatures, aspects and advantages of the present disclosure.

FIG. 2 is a front perspective view of the headgear of FIG. 1.

FIG. 3 is a rear perspective view of the headgear of FIG. 1.

FIG. 4 is a right side view of the headgear of FIG. 1.

FIG. 5 is a rear view of the headgear of FIG. 1.

FIG. 6 is a left side view of the headgear of FIG. 1.

FIG. 7 is a top view of the headgear of FIG. 1.

FIG. 8 is a front view of the headgear of FIG. 1.

FIG. 9 is a bottom view of the headgear of FIG. 1.

FIG. 10 is a rear perspective of a removable crown strap assembly of theheadgear of FIG. 1.

FIG. 11 is a right view of the removable crown strap assembly of FIG.10.

FIG. 12 is a rear view of the removable crown strap assembly of FIG. 10.

FIG. 13 is a top view of the removable crown strap assembly of FIG. 10.

FIG. 14 is a side view of a rear strap of the headgear of FIG. 1.

FIG. 15 is a side view of the rear strap of FIG. 14 with a rear sleeveremoved.

FIG. 16 is a perspective view of the headgear assembly of FIG. 1 shownpositioned on a head of a user.

FIG. 17 is a perspective view of a latch adjustment mechanism foradjusting a rear strap.

FIG. 18 is a perspective view of a snap adjustment mechanism foradjusting a rear strap.

FIG. 19 is a perspective view of a telescoping arm adjustment mechanismfor adjusting a rear strap.

FIG. 20 is a perspective view of a further arrangement for adjusting arear strap.

FIG. 21 is a perspective view of a crown strap adjustment configuration.

FIG. 22 is a perspective view of another crown strap adjustmentconfiguration.

FIG. 23 is a perspective view of a headgear assembly.

FIG. 24 is another perspective view of the headgear assembly of FIG. 23.

FIG. 25 is a side elevation view of the headgear assembly of FIG. 23.

FIG. 26 is a rear elevation view of the headgear assembly of FIG. 23.

FIG. 27 is a side elevation view of the headgear assembly of FIG. 23.

FIG. 28 is a top view of the headgear assembly of FIG. 23.

FIG. 29 is a front elevation view of the headgear assembly of FIG. 23.

FIG. 30 is a bottom view of the headgear assembly of FIG. 23.

FIG. 31 is a perspective view of a crown strap assembly of the headgearassembly of FIG. 23.

FIG. 32 is a front view of the crown strap assembly of FIG. 31.

FIG. 33 is an enlarged view of a portion of the crown strap assembly ofFIG. 31.

FIG. 34 is a perspective view of a headgear assembly.

FIG. 35 is another perspective view of the headgear assembly of FIG. 34.

FIG. 36 is a side elevation view of the headgear assembly of FIG. 34.

FIG. 37 is a rear elevation view of the headgear assembly of FIG. 34.

FIG. 38 is a side elevation view of the headgear assembly of FIG. 34.

FIG. 39 is a top view of the headgear assembly of FIG. 34.

FIG. 40 is a front elevation view of the headgear assembly of FIG. 34.

FIG. 41 is a bottom view of the headgear assembly of FIG. 34.

FIG. 42 is a side view of a crown strap assembly of the headgearassembly of FIG. 34.

FIG. 43 is a rear view of the crown strap assembly of FIG. 42.

FIG. 44 is an enlarged sectioned view of a portion of the crown strapassembly of FIG. 42.

FIG. 45 is a perspective view of the crown strap assembly of FIG. 42.

DETAILED DESCRIPTION

FIG. 1 illustrates an interface and headgear assembly 100 that isarranged and configured in accordance with certain features, aspects andadvantages of the present disclosure. The assembly 100 features aninterface 102 that is removably connectable with a headgear assembly104.

The patient interface 102 can be any suitable type of patient interface.Examples of suitable types of patient interfaces include face masks,oral masks, nasal masks, nasal pillows masks, nasal cannulae,combinations of oral and nasal masks, tracheal masks, and the like. Theillustrated interface 102 is a nasal pillows mask that includes a maskframe 106.

In the illustrated configuration, the mask frame 106 and the headgearassembly 104 can be joined together using any suitable technique. In theillustrated configuration, a post and hook system 108 is used to jointhe patient interface 102 and the headgear assembly 104. In theillustrated system 108, the mask frame 106 can include a post 110 or thelike while the headgear assembly 104 can include a hook 112. The hook112 can be joined to the post 110 to connect the headgear assembly 104to the mask frame 106 and the hook 112 can be separated from the post110 to decouple the headgear assembly 104 from the mask frame 106.

The headgear assembly 104 generally comprises a main strap 114. The mainstrap 114 can be configured to extend around the back of the head orneck of the wearer. The main strap 114 can have any suitableconfiguration and can be formed of any suitable material. In someconfigurations, the main strap 114 can be formed of a stretchablematerial. In some configurations, the main strap 114 comprises atubular-knitted elastic strap. In some configurations, the main strap114 can be of any configuration described in WO2010/131189, published onNov. 18, 2010, or WO2011/059346, published on May 19, 2011, each ofwhich is hereby incorporated by reference in its entirety. The mainstrap 114 provides an easy donning of the interface and headgearassembly 100 because the main strap 114 allows the wearer to simplystretch the main strap 114 and fit the interface and headgear assembly100 to the head.

In the illustrated configuration, the main strap 114 comprises two ends116. With continued reference to FIG. 1, each of the two ends 116 can beconnected to a corresponding hook 112. Two different types of hookmembers 118A, 118B are illustrated in FIG. 1. Additional types of hookmembers 118C, 118D, 118E are illustrated in FIGS. 17-19. Any suitablehook member can be used. The hook members 118A, 118B, 118C, 118D, 118Epreferably facilitate easy connection to and disconnection from theinterface 102. In some configurations, the hook members 118A, 118B,118C, 118D, 118E support smooth rotation during fitting or connection.In other words, the hook members 118A, 118B, 118C, 118D, 118E can rotateinto position relative to the posts 110.

One of the hook members 118A is designed to create a fixed length to themain strap 114. In other words, a position of the first of the two hookmembers 118A on or relative to the main strap 114 is not adjustable. Thehook member 118A can capture at least a portion of the main strap 114 orcan be secured to the main strap 114 in any other suitable manner. Insome configurations, the hook members 118A is an assembly that isovermoulded into position onto the main strap 114.

The second of hook members 118B is adjustable relative to the main strap114 and allows the length of the main strap 114 to be adjusted. In theillustrated configuration, the hook member 118B includes an openingthrough which the end 116 of the main strap 114 can be threaded beforebeing doubled back and secured to itself. In the illustratedconfiguration, a hook and loop fastener 120 can be used. The hook andloop fastener 120 can include a hook tab that is secured to the mainstrap 114. In some configurations, the hook tab can be ultrasonicallywelded, or RF welded, to a nylon, polyester or similar coveredsubstrate, which can form a portion of the main strap 114. In someconfigurations, the hook portion of the hook and loop fastener 120 canbe positioned on the end of the strap 114 with the loop portion beingpositioned on the portion of the strap between the two ends of the strap114.

With reference to FIG. 17, the third of the hook members 118C isdesigned to be adjustable and allows the length of the main strap 114 tobe adjusted. The main strap 114 feeds through a first latch component180 and a second latch component 182. The first latch component 180 andthe second latch component can be pivotally connected, for example butwithout limitation. The position of the hook member 118C along the mainstrap 114 can be adjusted until the first latch component 180 and thesecond latch component 182 are pivoted to a locked position. When in thelocked position, the hook member 118C is secured in position along themain strap 114. When in the unlocked position, the hook member 118C canbe adjusted along the main strap 114 such that the length of the mainstrap 114 can be increased and decreased.

With reference to FIG. 18, the fourth of the hook members 118D also isdesigned to be adjustable and allows the length of the main strap 114 tobe adjusted among a plurality of predetermined lengths. In theillustrated configuration, the main strap 114 includes a plurality ofsnaps 190. The snaps 190 away from the end of the main strap 114cooperate with a portion that is positioned on the end of the main strap114. As such, the portion that is positioned on the end of the mainstrap 114 can be moved among the plurality of the snaps 190 to allow foradjustment. In some configurations, the main strap 114 can be providedwith two or three different set points (e.g., to correspond to large,medium and small sizes). Other configurations also are possible keepingin mind the goal of providing for simple, yet effective, adjustability.

With reference to FIG. 19, the fifth of the hook members 118E isadjustable and allows the length of the main strap 114 to be adjustedthrough a telescoping mechanism 200. The telescoping mechanism 200generally comprises an outer sleeve member 202 and an inner arm 204. Inthe illustrated configuration, the outer sleeve member 202 is secured tothe strap 114 while the inner arm 204 is secured to a hook element 206.In some configurations, the orientation is switched. The outer sleevemember 202 can define an inner passage. The inner passage can includeone or more ridges. The inner arm 204 can include one or more recesses.In some configurations, the outer sleeve member can have recesses on theinner passage while the inner arm includes ridges. Other configurationsalso are possible. By squeezing the outer sleeve member 202, the innerarm 204 can translate relative to the outer sleeve member 202. In someconfigurations, the outer sleeve 202 is squeezed in a direction that isgenerally normal or perpendicular to the interlocking recesses andridges such that squeezing the outer sleeve 202 results in movement of aportion of the outer sleeve 202 away from the inner arm 204.Accordingly, the illustrated configuration provides adjustability. Theadjustability provides a plurality of set points depending upon thedistance between the ridges and the recesses. Other detent arrangements,locks and retention arrangements can also be used.

In some configurations, such as that illustrated in FIG. 23, theadjustability can be provided through the use of buckles 230 or thelike. The strap 114 can be threaded through the hooks 112 and secured toa desired length by threading through the buckles 230. Other suitableconfigurations also can be used keeping in mind a desire to provideadjustability to the length of the strap 114.

As shown in FIG. 15, in some configurations, the main strap 114 can beused without any further components. In other words, the main strap 114can be secured to the interface 102 and provide a retention force tomaintain the interface 102 in position for use. In such configurations,the main strap 114 may also comprise the hook members 118A (or the hookmembers 118B).

With reference to FIG. 14, to enhance comfort, a sleeve 122 can bepositioned along the main strap 114 between the ends 116. The sleeve 122can be configured in any suitable manner and the sleeve can be formed ofany suitable material. In some configurations, the sleeve 122 isrepositionable along the main strap 114 in any location between the ends116. In some configurations, the sleeve 122 is secured to the main strap114 and cannot be removed and/or cannot be moved along the length of themain strap 114.

The sleeve 122 can be formed of polyester, nylon, micro fibre, fleece,or any other suitable materials, including those that are quick dryingand/or moisture wicking. In some configurations, the sleeve 122 forms aflattened tube-like structure that defines an elongate passage thatterminates at openings 124. In configurations in which the sleeve 122 isremovable, the openings 124 can be sufficiently large or flexible toaccommodate the hook members 118A, 118B. In configurations using theremovable hook members 118B, however, the openings 124 need not besufficiently large or flexible to accommodate the hook members 118B. Themain strap 114 can be inserted into one of the openings 124 and passedthrough the passage.

The illustrated sleeve 122 also has a contact surface 126. The contactsurface 126 is the surface that will be directly in contact with thewearer. In the illustrated configuration, the contact surface 126 isenlarged relative to the corresponding surface of the main strap 114. Inthe illustrated configuration, the contact surface 126 and the oppositesurface both can provide an elongate flattened surface. By providing anelongate flattened surface, labeling can be positioned on the sleeve122, which can be used to provide guidance for the proper orientation ofthe main strap 114 when donning the interface and headgear assembly 100.In some configurations, the contact surface 126 can be provided withsurface texturing or the like to enhance gripping on short haired orbald headed patients.

With reference again to FIG. 1, the headgear assembly 104 also cancomprise a crown strap assembly 130. In some configurations, the crownstrap assembly 130 can be selectively coupled to and decoupled from themain strap 114. By including a detachable crown strap assembly 130, theheadgear assembly 104 can provide more options to the user, which canenhance the individualized comfort and/or support sought by users. Inaddition, using the crown strap assembly 130 can improve stability ofthe headgear assembly 104. Moreover, because the crown strap assembly130 is designed to pass over the top of the head of the user, using thecrown strap assembly 130 can reduce slippage of the main strap 114during use.

Turning now to FIGS. 10-13, the crown strap assembly 130 is shownseparated from the main strap 114. In the illustrated configuration, thecrown strap assembly 130 is adjustable. Accordingly, the illustratedcrown strap assembly 130 comprises a first portion 132 and a secondportion 134. The first portion 132 and the second portion 134 can beadjustably connected. In the illustrated configuration, an adjustmentmechanism 136 couples the first portion 132 and the second portion 134.The first portion 132 connects to the main strap 114 and the secondportion 134 while the second portion 134 connects to the main strap 114and the first portion 132. In other words, the first portion 132 and thesecond portion 134 are connected to the main strap 114 and to eachother. In other configurations, the crown strap 130 is not adjustableand can be constructed as a single piece.

The adjustment mechanism 136 in the configuration illustrated in FIG. 1comprises a plurality of apertures 138 and one or more posts 140. Insome configurations, two posts 140 are provided and three apertures 138are provided. The illustrated configuration provides at least threedifferent settings such that the adjustment mechanism 136 provides threedifferent length or height settings for the crown strap assembly 130.That is, a change in length of the crown strap 130 changes a height ofends of the crown strap 130 on a user's head in use. Other types ofadjustment mechanisms and other numbers of settings can be used.

The posts 140 can comprise a stem and a head portion. The head portionof the posts 140 can be very closely sized or slightly oversizedrelative to the aperture 138. The apertures 138 can snap fit over thehead portions of the posts 140. In such a manner, a secure coupling canbe provided.

Other manners of securing the first portion 132 and the second portion134 together also can be used. For example, as shown in FIG. 21, theadjustment mechanism 136 can include two or more slots 210 and aplurality of transverse ridges 212. In the illustrated configuration,the first portion 132 comprises two parallel slots 210. The slots 210 donot extend the full width of the first portion 132. By being generallyparallel, the slots 210 can interact with the ridges 212 of the secondportion 134. In some configurations, however, the slots 210 may not begenerally parallel. The ridges 212 can extend the full width or at leastsome portion of the width of the second portion 134. By spacing theridges 212 at desired increments, a plurality of discrete andpredetermined sizes can be defined for the crown strap assembly 130.

With reference to FIG. 22, another adjustment mechanism 136 isillustrated. In the illustrated configuration, the first portion 132 caninclude one or more wedges or flaps 220 while the second portion 134 caninclude corresponding slots 222. In some configurations, the same numberof wedges/flaps 220 and slots 222 can be used (e.g., 3 wedges/flaps 220and 3 slots 222). In some configurations, fewer wedges/flaps 220 thanslots 222 can be provided. In some configurations, more wedges/flaps 220than slots 222 can be provided. The illustrated configuration providesfor adjustability between discrete and predetermined sizes for the crownstrap assembly 130. In some configurations, three or four sizes can beprovided.

With reference to FIG. 34, a further adjustment mechanism 136 isillustrated. In the illustrated configuration, the first portion 132includes a loop 152 that defines a passageway. The second portion 134can extend into the passageway defined by the loop 152. In theillustrated configuration, the loop 152 can include a tang 232, tab orthe like. The tang 232 can extend into the passageway defined by theloop 152. The tang 232 is deflectable and, together with a plurality ofridges or recesses 234, can define a ratchet mechanism 236. The ratchetmechanism 236 can resist expansion of the crown strap assembly 130 whileallowing adjustability to shorten the crown strap assembly 130. In someconfigurations, with enough force applied to the first portion 132 andthe second portion 134, the crown strap assembly 130 can be lengthenedby overpowering the ratchet mechanism 236. In some configurations, arelease can be provided to move the tang 232 and allow lengthening ofthe crown strap assembly 130. Other configurations can be used keepingin mind a desire for a relatively secure adjustment mechanism, such asany suitable detent arrangement, for example.

The first portion 132 of the crown strap assembly 130 comprises a firstbridge region 142 and a first strap region 144. The second portion 134of the crown strap assembly 130 similarly comprises a second bridgeregion 146 and a second strap region 148. In some configurations, thefirst portion 132 and the second portion 134 are generally symmetricalto each other with the exception of the region that defines theadjustment mechanism 136. Other configurations are possible.

The first strap region 144 comprises the apertures 138 and, as shown inFIG. 6, may have reduction in width somewhere along its length. In theillustrated configuration, the first strap portion 144 comprises atapering zone 150 such that a first width of the first strap portion 144is smaller than a second width of the first strap portion 134 that iscloser to the first bridge region 142. The second strap region 148comprises at least one loop 152. In the illustrated configuration, theloop 152 is positioned at an end of the second strap region 148 furthestfrom the second bridge region 146. The loop 152 serves to somewhatrestrain the first strap region 144 at a location between the posts 140of the second strap region 148 against significant movement away fromthe second strap region 148.

In some configurations, the loop 152 defines a passage that has a width.The width of the passage is smaller than the second width of the firststrap region 144 and larger than the first width of the first strapregion 144. In such configurations, the structure that defines the loop152 serves to limit the degree to which the first strap region 144 canmove along the second strap region 148. Other configurations also arepossible. In addition, the location of features on any strap region canbe reversed such that elements shown on one strap region can bepositioned on the other. For example, the loop 152 is shown on thesecond strap region 148 in FIG. 1 and the loop 152 is shown on the firststrap region in FIGS. 21 and 22.

With continued reference to FIG. 10, the second strap region 148comprises one or more ribs 154. The illustrated ribs 154 are elongatemembers that extend along the lateral edge of at least a portion of thesecond strap region 148. The illustrated ribs 154 extend to and connectwith the loop 152. The ribs 154 can taper such that a height of the ribs154 reduces in a direction away from the loop 152. The narrower portionof the first strap region 144 can fit between the ribs 154. In someconfigurations, the ribs 154 in the region that will receive the firststrap region 144 can be commensurate with the thickness of the firststrap region 144. By making the two commensurate, the top of the ribs154 and the top surface of the first strap region 144 can be generallyflush.

With continued reference to FIG. 10, the second bridge region 146 willbe described. The first bridge region 142 is generally configured thesame as the second bridge region 146. In the illustrated configurations,the first and second bridge regions 142, 146 are generally mirror imagesof each other. Other configurations are possible.

As described above, the illustrated crown strap assembly 130 isconfigured for use with a single main strap 114. In some configurations,the main crown strap assembly 130 can be configured to connect with morethan one main strap.

In the illustrated configurations, the second bridge region 146 definesa strap passage 156. In some configurations, the passage 156 can bedefined by three supporting components 158. The supporting components158 are spaced apart along a length of the second bridge region 146. Insome configurations, two of the three supporting components 158 areconfigured to secure the main strap 114 against significant upwardmovement relative to the second bridge region 146 while the third of thethree supporting components 158 is configured to secure the main strap114 against significant downward movement relative to the second bridgeregion 146. In some configurations, all three of the supportingcomponents 158 are configured to secure the main strap againstsignificant downward movement relative to the second bridge region 146.

With continued reference to FIG. 10, at least two of the threesupporting components 158 can define interrupted loops 160. Theinterrupted loops 160 can include a slotted gap or the like. In theillustrated configuration, the slotted gap or the like can be positionedalong an upper portion of the associated loop 160. Each slotted gap canbe sized and configured to allow threading of the main strap 114 intothe corresponding loop 160. In the illustrated configuration, the loops160 are flattened loops with two shorter ends connected to two longerends and the slotted gap is positioned along one of the two longer endswhile the other of the longer ends is defined by a main body 162 of thesecond strap region 148.

The main body 162 of the second bridge region 146 extends between theloops 160 and connects the loops 160 to the second strap region 148. Alower lip 164 extends outward from a lower portion of the main body 162.The lower lip 164 can further resist downward movement of the main strap114 relative to the second strap region 148. The lower lip 164 canextend outward away from the main body 162 to a degree that generally iscommensurate with the outer surface of the loops 160 such that the lowerlip 164 and the loops are generally flush with each other. The lower lip164 can extend between the supporting components 158 and, in someconfigurations, can fill the spaces between the supporting components158.

With continued reference to FIG. 10, the main body 162 also defines oneor more apertures 166. In the illustrated configuration, the aperture166 is positioned generally equidistantly to the two ends of the secondstrap region 148. In some configurations, the aperture 166 is positionedgenerally equidistantly to the two ends of the main body 162. Theaperture 166 can be positioned in the junction between the second strapregion 148 and the second bridge region 146. Other configurations arepossible.

In the illustrated configuration, the medial member 168 of the threesupporting components 158 can at least partially overlap with theaperture 166. In the illustrated configuration, the medial member 168 ispositioned fully within a region defined as an extension of the outerbound of the aperture 166 (see FIG. 11). In some configurations, themedial member 168 is positioned such that at least a portion of theaperture extends further toward the ends of the second bridge region 146relative to the ends of the medial member 168. The medial member 168 canextend upward away from the lower lip 164. The medial member 168 canextend upward away from the lower lip 164 a distance that is at leastabout one-half of a height of the main strap 114.

In some configurations, such as that shown in FIG. 20, at least one ofthe bridge region 142, 146 and the associated strap region 144, 148includes a second medial member 174. The second medial member 174 can bepositioned vertical higher than the medial member 168. In someconfigurations, the second medial member 174 can be positionedvertically above the medial member 168. In some configurations, thesecond medial member 174 can be sized and configured identically orsubstantially identically to the medial member 168.

In some configurations, the second medial member 174 can define astrap-accommodating passage between the second medial member 174 and theat least one of the bridge region 142, 146 and the associated strapregion 144, 148. The second medial member 174 advantageously providesfurther adjustability for the headgear assembly 104. The strap 114 canbe supported by one of the medial member 168 or the second medial member174. By moving the strap 114 to the second medial member 174 from themedial member 168, the strap 114 can be effectively shortened. While theillustrated configuration illustrates two medial members 168, 174 oneach side of the headgear assembly 104, more than two medial members canbe provided on one or both sides of the headgear assembly 104.

In the illustrated configuration, the second bridge region 146 arcsupward. In other words, as shown in FIG. 11, a central region 170 isvertically higher than ends 172 of the second bridge region 146. In theillustrated configuration, uppermost portions of the ends 172 arepositioned lower than a lowermost portion of the central region 170. Thesecond bridge region 146 can be configured such that the top of the earcan be bypassed while maintaining a desired headgear vector for theinterface 102 being supported by the headgear. Such an example isillustrated in FIG. 16, for example but without limitation. Moreover,the elongated main body 162 provides arms that reduce pivotal movementof the main strap 114 and the vertical extent of the main body 162combined with the three supporting components can minimize twisting inthe main strap 114. Other configurations are possible.

In use, the main strap 114 can be threaded through the slots in theloops 160 and slid into a gap defined between the medial member 168 andthe main body 162 such that the main strap 114 is positioned within theloops 160 and supported by the combination of the main body 162 and themedial member 168. Such a configuration is shown in FIGS. 1-9. In thismanner, the user of the headgear can adjust the headgear to a desiredconfiguration by adding the strap, removing the strap or resizing thestrap.

With reference to FIGS. 23-33, another configuration for the bridgeregions will be described. As illustrated, the headgear assembly 104comprises the crown strap assembly 130. The crown strap assembly 130includes the first portion 132 and the second portion 134 that can besecured together in any suitable manner. However, as described above,the crown strap 130 can be a single member or otherwise fixed in length.In the illustrated arrangement, the first portion 132 includes the firstbridge region 142 and the first strap region 144. The second portion 132includes the second bridge region 146 and the second strap region 148.Each of these components can be configured in accordance with any of thedescription herein.

The first bridge region 142 and the second bridge region 146 can be thesame as each other or can be different from each other. In theillustrated configuration, the first and second bridge regions 142, 146are mirror images of each other. As such, only one will be described butthe description applies to each.

The illustrated bridge region 142, 146 defines a passageway thataccommodates the strap 114. In some configurations, the passageway islinear. In some configurations, the passageway includes a bend. The someconfigurations, the passageway includes two linear portions that areconnected with a bend.

In the illustrated configuration, the bridge region 142 comprises aninner wall 240 and an outer wall 242 that are connected together. Theinner wall 240 and the outer wall 242 generally combine to define a loopthat defines the passageway. The inner wall 240 preferably is anextension of the strap region 144, 148 because the inner wall 240 willbe adjacent to the head of the user in use.

At least a portion of the loop is interrupted to define an insertionpath for the strap 114. In the illustrated configuration, the outer wall242 includes a slot 244 that interrupts the outer wall 242. The slot 244is sized, positioned and configured to allow the strap 114 to bethreaded into position within the passageway. The slot 244 can begenerally straight or horizontal. In some configurations, the slot 244can be slightly arcuate. In some configurations, the slot 244 can beslightly arcuate with a higher mid-portion than the outer portions. Insome configurations, the inner wall may be interrupted. In someconfigurations, an upper or lower portion of the loop may beinterrupted. However, by interrupting the inner wall 240 or the outerwall 242, the slot 244 can be positioned along the longer surface of thestrap while also allowing the strap 114 to be secured in the verticaldirections (i.e., up and down along the user's head).

With reference now to FIG. 33, the outer wall 242, as a result of theslot 244, includes an upper portion 246 and a lower portion 248 in theillustrated configuration. In some configurations, the upper portion 246is slightly less open than the lower portion 248. In other words, thedistance between the outer wall 242 and the inner wall 240 is greater atthe lower portion 248 than at the upper portion 246. Moreover, in theillustrated configuration, the gap that defines the passageway for thestrap 114 is larger at the lower portion 248 than at the upper portion246. Such a configuration assists in assembly of the strap 114 into theslot 244 and/or help in retention of the strap 114 within the slot 244.

With reference now to FIGS. 34-45, a further configuration for thebridge regions will be described. As illustrated, the headgear assembly104 comprises the crown strap assembly 130. The crown strap assembly 130includes the first portion 132 and the second portion 134 that can besecured together in any suitable manner. The first portion 132 includesthe first bridge region 142 and the first strap region 144. The secondportion 132 includes the second bridge region 146 and the second strapregion 148. Each of these components can be configured in accordancewith any of the description herein.

The first bridge region 142 and the second bridge region 146 can be thesame as each other or can be different from each other. In theillustrated configuration, the first and second bridge regions 142, 146are mirror images of each other. As such, only one will be described butthe description applies to each.

The illustrated bridge region 142, 146 defines a passageway thataccommodates the strap 114. The passageway in the arrangement shown inFIGS. 34-45 differs from the passageways described above. In thearrangement shown in FIGS. 34-45, the passageway is defined by twogenerally vertical slots 260 (see FIG. 42). The two slots 260 aredefined by two outer posts 262 and an intermediate portion 264. Thestrap 114 can be threaded through the slots 260, which allows adjustmentof the location of the crown strap assembly 130 along the strap 114.

In the illustrated configuration, the outer posts 262 are connected toeach other. The outer posts 262 can be connected with an upper member266 and a lower member 268. The outer posts 262, upper member 266 andlower member 268 can define a frame into which the strap 114 threads.The frame can be a complete (i.e., gapless) frame. As such, theintermediate portion 264 can be interrupted to enable insertion of thestrap 114. In some configurations, one or more of the posts 262 can beinterrupted. In some configurations, one or more of the upper member 266and the lower member 268 can be interrupted. In the illustratedconfiguration, the intermediate portion 264 is separated into twocomponents by a slot or gap 270. In some configurations, the gap 270 canbe positioned such that a single intermediate member is formed. In theillustrated configuration, the gap 270 is positioned such that twointermediate members 272, 274 are formed. In the illustratedconfiguration, the gap 270 is positioned such that two intermediatemembers 272, 274 having approximately the same length are formed. Such aconfiguration is desired for providing a secure connection with thestrap 114. Moreover, as shown in FIG. 44, the two intermediate member272, 274 can have different shapes such that insertion of the strap 114is made easier. For example, one member may be slightly splayed openrelative to the other member, similar to the arrangement illustrated inFIG. 33, for example. In the illustrated configuration, the lower member274 is splayed open slightly more than the upper member 272. Otherconfigurations are possible.

With reference to FIG. 43, the intermediate members 272, 274 canprotrude inwardly. In other words, the intermediate members 272, 274 canprotrude toward the head of the user in use relative to the outer posts262, for example. As shown in FIG. 44, the intermediate members 272, 274can protrude toward the user yet still overlap with the outer posts 262.In some configurations, the intermediate members 272, 274 can be flushwith the outer posts 262 on a user-side surface. In some configurations,the intermediate members 272, 274 can protrude outwardly from the outerposts 262 (i.e., away from the user in use). The illustratedconfiguration facilitates insertion of the strap 114 through the gap 270and into position relative to the intermediate portion 264.

Unless the context clearly requires otherwise, throughout thedescription and the claims, the words “comprise”, “comprising”, and thelike, are to be construed in an inclusive sense as opposed to anexclusive or exhaustive sense, that is to say, in the sense of“including, but not limited to”.

Reference to any prior art in this specification is not, and should notbe taken as, an acknowledgement or any form of suggestion that thatprior art forms part of the common general knowledge in the field ofendeavor in any country in the world.

The invention may also be said broadly to consist in the parts, elementsand features referred to or indicated in the specification of theapplication, individually or collectively, in any or all combinations oftwo or more of said parts, elements or features.

Where, in the foregoing description reference has been made to integersor components having known equivalents thereof, those integers areherein incorporated as if individually set forth.

It should be noted that various changes and modifications to thepresently preferred embodiments described herein will be apparent tothose skilled in the art. Such changes and modifications may be madewithout departing from the spirit and scope of the invention and withoutdiminishing its attendant advantages. For instance, various componentsmay be repositioned as desired. It is therefore intended that suchchanges and modifications be included within the scope of the invention.Moreover, not all of the features, aspects and advantages arenecessarily required to practice the present invention. Accordingly, thescope of the present invention is intended to be defined only by theclaims that follow.

1. An interface and headgear assembly comprising: an interfacecomprising a frame and a seal supported by the frame; a headgearassembly removably connected to the interface, the headgear comprising afirst strap configured to connect at a first end to the interface and ata second end to the interface, a crown strap connected to the firststrap, the crown strap comprising a first bridge region and a secondbridge region, the first bridge region defining a first passage thatreceives the first strap and the second bridge region defining a secondpassage that receives the first strap, wherein each of the first bridgeregion and the second bridge region is adjustable in position relativeto the first strap.
 2. The assembly of claim 1, wherein each of thefirst bridge region and the second bridge region comprises multiplesupporting components configured to secure the first bridge region andthe second bridge region, respectively, to the first strap.
 3. Theassembly of claim 2, wherein the supporting components comprise a firstloop and a second loop configured to receive the strap of the interfaceand headgear assembly.
 4. The assembly of claim 3, wherein each of thefirst and second loops is an interrupted loop.
 5. The assembly of claim4, wherein each of the first and second loops comprises an upper portionand a lower portion defining a slot therebetween.
 6. The assembly ofclaim 5, wherein a width of a passageway defined by each of the firstand second loops is smaller at the upper portion than at a lowerportion.
 7. The assembly of claim 3, further comprising at least onemedial member positioned between the first loop and the second loop andextending vertically upward from a lower lip of the first bridge region.8. The assembly of claim 7, wherein the at least one medial membersupports the first strap at a relatively higher position than a positionof the first strap at the first and second loops.
 9. The assembly ofclaim 7, wherein the at least one medial member comprises a lower medialmember and an upper medial member and the first strap can be engagedwith either of the lower or upper medial members to adjust an effectivelength of the first strap.
 10. The assembly of claim 1, wherein thecrown strap comprises a first strap region and a second strap region,the first strap region and the second strap region being removablycoupled together.
 11. The assembly of claim 10, wherein the first strapregion and the second strap region are coupled by an adjustmentmechanism.
 12. The assembly of claim 11, wherein the adjustmentmechanism comprises a plurality of apertures and one or more posts thatare selectively engageable with the plurality of apertures.
 13. Theassembly of claim 11, wherein the adjustment mechanism comprises two ormore slots and a plurality of ridges that are selectively engageablewith the one or more slots.
 14. The assembly of claim 11, wherein theadjustment mechanism comprises one or more slots and one or more wedgesor flaps that are selectively engageable with the one or more slots. 15.The assembly of claim 1, wherein the first strap is constructed from astretchable material.
 16. The assembly of claim 15, wherein the crownstrap is constructed from a substantially non-stretchable material. 17.The assembly of claim 16, wherein at least a strap region of the crownstrap is constructed from a flexible material.
 18. The assembly of claim17, wherein the material of the strap region has sufficient rigiditysuch that it is capable of substantially maintaining its shape.
 19. Theassembly of claim 1, further comprising a sleeve on the first strap. 20.The assembly of claim 19, wherein a surface of the sleeve that contactsa user in use comprises grip-enhancing features.